You could feed two hoppers in one day until you use up the "extras" and just move up to rat pups or adult mice once you have run through them. I have a couple adult female balls that are my "garbage disposals". I have fed Lucky, Mai, Bertha, Wilma, Mona and Kylee multiple prey items before. Everyone is still kickin and doing fine. So don't worry about feeding two prey items in one day. Feed until your baby has a noticeable food bulge and it is no longer hungry.